Wheel for cultivators



(No Modl.)

A. ANDERSON.

WHEEL FOB, OULTIVATORS.

No. 558,250. Patented Apr. 14, 1896.

a'vwemtoz m Mg, W W

UNITED STATES PATENT OFFICE.

ANTON ANDERSON, OF'CHICAGO, ILLINOIS.

WHEEL FOR CULTIVATORS.

SPECIFICATION forming part of Letters Patent No. 558,250, dated April 14, 1896.

Application filed September 7, 1896. Serial No. 561,840. (No model.)

To aZZ whom, it may concern:

Be it known that I, ANTON ANDERSON,a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Wheels for Cultivators and the Like; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the lettersof reference marked thereon, which form a part of this specification.

This invention is directed to improvements in the construction of wheels for use in connection with rotary plows, cultivators, harrows, and the like, and has for its objects, first, the production of an improved blade which insures maximum efliciency in opera tion, in that its structure enables the easy penetration of the ground, and, second, the provision of improved means for locking the blades in the hub in a manner to entirelypreelude displacement.

Other advantages will appear in the following detailed description of the construction of my improved wheel, which refers to the accompanying drawings, in which Figure 1 is an elevation of my improved wheel. Fig. 2 is an elevation with the outer hub member removed. Fig. 3 is a perspective View of the inner hub member with one blade in position. Fig. 4is aperspective view of the outer hub member. Fig. 5 is a side elevation of the hub with the blades removed. Fig. 6 is a rear edge view of one of the blades. Fig. 7 is a front edge view of the same. Fig. 8 is a perspective view showing the locking end, and Figs. 9 and 10 are sectional views respectively on lines 0c 00 and y y of Fig. 2.

Referring to the said drawings by letter, A denotes the hub, which is formed of two diskshaped members a and a, the inner hub memher a being provided with a central boltaperture 1) and tan gentially-arranged wedgeshaped recesses c c. Adjacent to said recesses the face of the member is depressed to form an inclined wall d, which terminates in a shoulder d. At e e the face of the member is provided with bearing-surfaces, against which rest, when the parts are assembled, the triangular locking projections f f on the outer hub member a, which latter is otherwise provided with a plain unbroken face. WVhen the two members are brought together, there are formed by the walls d, shoulders d, projections f, and the inner face of the member a wedge-shaped openings, which receive the blades G now to be described.

The inner or shank end 9 of each blade is straight and has parallel sides, and at the end is an'offset h, the line h of which is inclined and corresponds with the wall 0 of the recess 0, against which it rests in practice. The extreme end of the shank rests against the wall 0 of the recess a, and the outer line if of the offset forms a wall for the side of the next adjacent shank. I The shank of the blades is wedge-shaped in cross-section, the inner side conforming to the inclined wall d and the outer side conforming to the inner face of the member a. The offset h is also wedge-shaped, its inner side conforming to the base of the recess and its outer side conforming to the line of inclination of the wall d, and when a blade is inserted said outer side forms a continuation of said wall and is firmly locked in place by the next adjacent shank which rests thereagainst. not only provided with its individual lockin g meansnamely, the engagement of the offset with the recess; but said shanks are also interlocking, and when the -parts are well assembled the displacement of a blade or blades is rendered impossible.

Beyond the shank the blade is continuously curved to {provide a convex cutting edge '6, which commences at a point near where the blade when in position leaves the hub, and said edge is extended to a point on the back of the blade just beyond the tip 7', which latter is rounded, as shown. The blade is wedgeshaped throughout, and conforms relatively in thickness to the shank, andby this construction great strength is obtained and the strain is equal throughout. To obtain\the turning action necessary in operation, th blade is curved outwardly, as best shown in Fig. 6, and preferably commences at a point coincident with the beginning of the curve previously referred to. The tip or point of the blade is, as before stated, regularly curved By this arrangement each shank is or rounded, and is provided with a cutting edge which readily enters the ground with the minimum friction. When the parts are assembled, a bolt 70 is passed through the ap erture b, and thence through an aperture Z in the hub member a.

I claim as my invention 1. Awheel for cultivators and the like comprising two hub members or sections one having stepped recesses or sockets, and blades having inner stepped shank portions fitting said recesses or sockets and interlappin g each other, substantially as set forth.

2. A wheel for eultivators, and the like comprising two hub members or sections having stepped recesses or grooves, the inner step of each recess being approximately wedgeshaped and blades having inner stepped portions or ends of corresponding shape and adapted to fit said recesses or grooves and.

and tapered ineross-seetion, said stepped oh":- sets interlapping each other, substantially as set forth.

4. A wheel for cultivators and the like comprising two hub members, one of which is provided with a series of tangentiallyarranged wedge shaped recesses, and with inclined walls and shoulders; the other member having projections located thereon with respect to said shoulders, and a series of wedge-shaped blades interposed between the Walls, shoulders and proj ections,and having interlapping, stepped offisets engaging said recesses.

5. A wheel for cultivators and the like comprising two hub members or sections one having stepped recesses or sockets, and blades having inner stepped shank portions fitting said recesses or sockets and interlapping each other, each of said blades being wedge-shaped in cross-section and curved laterally and 1011- gitudinally and of equal relative thickness l throughout.

, In testimony whereof I afiix my signature in presence of two witnesses.

ANTON ANDERSON. \Vitnesses-z G. E. SNIvELv, JOHN IRWIN. 

